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History • Heritage • DiscoveryRhayader · Mid Wales
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The dams · Elan Valley heritage

Claerwen Dam

The great post-war dam opened in 1952 and the landscape it transformed.

Elan Valley Past & Present

The history of Claerwen Dam

Claerwen Dam holds almost as much water as the combined total of the Elan Valley dams. It took six years to build, using a workforce of 470, and was opened by the newly crowned Queen Elizabeth on 23rd October 1952.

Height – 56 metres above river bed
Length – 355 metres
Total capacity – 48,300,300,000 litres

Construction Photographs

Here are some photographs of the construction of Claerwen Dam taken by the late Edgar Price, Rhayader. Many thanks to Ian Price for the loan of the photos.

More Construction Photographs

More photographs of the construction of Claerwen Dam. Many thanks to Pauline Walton for the loan of the photos.

Recent Photographs

More recent photographs of Claerwen Dam.

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Explore the Elan Valley on the map

Explore the Elan and Claerwen valleys using Ordnance Survey Leisure mapping.

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